package io;

import java.io.*;

/**
 * 使用缓冲流完成文件复制操作
 */
public class CopyDemo3 {
    public static void main(String[] args) throws IOException {
        FileInputStream fis = new FileInputStream("image.jpg");
        BufferedInputStream bis = new BufferedInputStream(fis);


        FileOutputStream fos = new FileOutputStream("image_cp3.png");
        BufferedOutputStream bos = new BufferedOutputStream(fos);


        int d;

        long start = System.currentTimeMillis();
        while ((d = bis.read()) != -1){
            bos.write(d);
        }
        long end = System.currentTimeMillis();
        System.out.println("copy off,use time:"+(end-start)+"ms");

        bis.close();
        bos.close();
    }
}
